User's Manual

Troubleshooting
8 311021U
Troubleshooting
Problem Cause Solution
E=XX is displayed Fault condition exists Determine fault correction from table, page
14.
Gas engine pulls hard (won’t start) Hydraulic pressure is too high Turn hydraulic pressure knob
counterclockwise to lowest setting.
Engine won’t start Engine switch is OFF Turn engine switch ON
Engine is out of gas Refill gas tank. Honda Engines Owner’s
Manual.
Engine oil level is low Try to start engine. Replenish oil, if
necessary. Honda Engines Owner’s Manual.
Spark plug cable is disconnected or
damaged
Connect spark plug cable or replace spark
plug
Cold engine Use choke
Fuel shutoff lever is OFF Move lever to ON position
Oil is seeping into combustion chamber Remove spark plug. Pull starter 3 to 4 times.
Clean or replace spark plug. Start engine.
Keep sprayer upright to avoid oil seepage.
Engine operates, but displacement
pump does not operate
Pump valve is OFF Turn pump valve ON.
Pressure setting is too low Turn pressure adjusting knob clockwise to
increase pressure. Manual 311018.
Fluid filter (11) is dirty Clean filter.
Tip or tip filter is clogged Clean tip or tip filter. Manual 311254
Displacement pump piston rod is stuck
due to dried paint
Repair pump. Manual 309277
Belt worn, broken or off pulley Replace.
Hydraulic fluid too low Shut of sprayer. Add fluid*
Hydraulic motor not shifting Set pump valve OFF. Turn pressure down.
Turn engine OFF. Pry rod up or down until
hydraulic motor shifts.
Displacement pump operates, but output
is low on upstroke.
Piston ball is not seating Service piston ball. Manual 309277.
Piston packings are worn or damaged. Replace packings. Manual 309277.
* Check hydraulic fluid level often. Do not allow it to become too low. Use only Graco approved hydraulic fluid, page 7.